5-HT Neurons and Central CO2 Chemoreception

Cardin I. Dohle, George B. Richerson

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Many neurons within the medullary raphe project to nuclei that control respiratory motor output. Through release of serotonin (5-HT) and the co-localized neuropeptides substance P and thyrotropin-releasing hormone, these neurons provide an essential tonic drive that maintains ventilation. Many 5-HT neurons are closely associated with large arteries of the brainstem, where they respond to changes in arterial CO2 levels by increasing their firing rate. These properties allow them to play an important role as central respiratory chemoreceptors, causing an increase in ventilation in response to increased CO2 levels and returning CO2 and pH back to normal. Some 5-HT neurons in the midbrain may play a similar role in sensing changes in blood CO2and may induce arousal when CO2 levels increase during sleep. Defects in 5-HT neurons occur in a variety of human diseases and may contribute to abnormalities of respiratory control and blood gas homeostasis.

Original languageEnglish (US)
Title of host publicationHandbook of Behavioral Neuroscience
Pages293-305
Number of pages13
EditionC
DOIs
StatePublished - Jan 1 2010
Externally publishedYes

Publication series

NameHandbook of Behavioral Neuroscience
NumberC
Volume21
ISSN (Print)1569-7339

Fingerprint

Serotonin
Neurons
Ventilation
Thyrotropin-Releasing Hormone
Substance P
Mesencephalon
Arousal
Neuropeptides
Brain Stem
Sleep
Homeostasis
Arteries
Gases

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Behavioral Neuroscience

Cite this

Dohle, C. I., & Richerson, G. B. (2010). 5-HT Neurons and Central CO2 Chemoreception. In Handbook of Behavioral Neuroscience (C ed., pp. 293-305). (Handbook of Behavioral Neuroscience; Vol. 21, No. C). https://doi.org/10.1016/S1569-7339(10)70085-0

5-HT Neurons and Central CO2 Chemoreception. / Dohle, Cardin I.; Richerson, George B.

Handbook of Behavioral Neuroscience. C. ed. 2010. p. 293-305 (Handbook of Behavioral Neuroscience; Vol. 21, No. C).

Research output: Chapter in Book/Report/Conference proceedingChapter

Dohle, CI & Richerson, GB 2010, 5-HT Neurons and Central CO2 Chemoreception. in Handbook of Behavioral Neuroscience. C edn, Handbook of Behavioral Neuroscience, no. C, vol. 21, pp. 293-305. https://doi.org/10.1016/S1569-7339(10)70085-0
Dohle CI, Richerson GB. 5-HT Neurons and Central CO2 Chemoreception. In Handbook of Behavioral Neuroscience. C ed. 2010. p. 293-305. (Handbook of Behavioral Neuroscience; C). https://doi.org/10.1016/S1569-7339(10)70085-0
Dohle, Cardin I. ; Richerson, George B. / 5-HT Neurons and Central CO2 Chemoreception. Handbook of Behavioral Neuroscience. C. ed. 2010. pp. 293-305 (Handbook of Behavioral Neuroscience; C).
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